Calculating-machine.



PATENTED FEB. 12, 1907.

N. J. GOLDFARB. CALCULATING MACHINE.

AIPIJGATION FILED JAN.4, 1906.

- TEST 1.

PATENTED FEB. 12, 1907.

N. J. GOLDPARB. CALCULATING MACHINE,

APPLICATION FILED JAN.4, 1906.

SHEETS-SHEET 2.

.40. o'wws a UNITED STATES PATENT OFFICE.

NAT A J. GOLDFARB, OF NEW YORK, n. Y., ASSIGNOR TO THE COMMERCIAL ADDINGYORK.

MACHINE CO.,fOF NEW YORK, N. Y., A CORPORATION OF NEWHCALCULATING-MACHINE.

. Specification of Letters IPatent. Applicationiiled January 4, 1906.Serial No. 294,572.

Patented Feb. 12, 1907.

This invention relates to calculating-ma chines ofthe type set forth inLetters Patent No. 725,242, granted tofme onApril 14, 1903.

anism that is to say, mechanism erated The present invention has amongits objects to provide animproved carrying mechfrom one of thenumeral-carryin e ements to actuate the adjacent one in order to carrythe number from units to tens or from tens to hundreds, and so on.

It is an object of this inventionto furnish means for effecting thisoperation which may be very readily operated and which are sim; ple inconstruction and positive in action. A further object of the inventionis to provide an im roved mechanism whereby after each caloul ments maybe simultaneously set at zero.

The invention'also aims to generally improve the construction ofmachines of this t e.

in the accompanying drawings, in which similar parts are denoted by thesame reference characters throughout the several views, Figure 1 is atop plan view of a portion of a calculating-machine constructed inaccordance with the invention. Fig. 2 is a trans-. verse section on line2 20f Fi .1. Fig. 3 is a section on line 3 3, Fi 1. ig. 4 is a bottomplan view of the mac ine, the bottom.being removed'in order to clearlyshow the parts. Fig. 5 is a longitudinal section on line 55, Fig. 6.Fig. 6 is a plan view of a portion of the machine, the cover and certainof the interior parts being removed. Fig. 7 is adetail perspective viewof the carrier-setting tri ger.

Fig. 8 is a similar view of the carrier. ig. 9 IS a detail transversesection of a modlfied ar rangejrnent of the carrying mechanism, y andation said numeral-carrying ele- {tending longitudinally of the machineat the front and rear of the same and journaled in said partitions arerotary shaftsa b, the former having keyed to it in each compartment aband-guiding pulley a, while the latter shaft carries a plurality ofsimilarly-arranged ulleys b. Movable over the pulleys a in eachcompartment are numeral-carrying calculatin'gbands c, provided, as inthe patent heretofore mentioned, with a lurality of equidistantlyspacedtransverse y disposed teeth or ribs 0, every tenth tooth 0 being ofgreater length than the other teeth, so as to extend entirely acrosssaid band. As shown in the drawings, the teeth a extend a little morethan half-way across each band 0. In each band, midway of the teeth 0,is arranged a longitudinally-disposed slot 0 which registers with roovesc in the ulleys a b.

Applie to the front wal of the machine at springs (1, each carrying aterminal roller (1, which engages the corresponding slot in the band ortape 0 and which rides over teeth 0 '0 when the bands are manuallyactuated and after actuation insures thestoppage of said bands in theproper position. The calculating-bands c are moved to the requiredextent by inserting the finger in the space between the teeth oppositeto the number which is to be added or subtracted, as the case may be,said numbers being arranged on cross-pieces a, extending transversely ofthe machine between the several bands or tapes and pulled toward thefront of the machine as far as is possible with the finger intheposition indicated. In the cover ofthe casing at the rear of eachnumeral-carrying cross-piece a, is arranged an aperture of, through.which the numbers carried by the calculatin -bands -c are v visible. IThese apertures exten ina row in conjunction show the result of'thecalculation.

machine is constituted by a plurality of carrier-plates 6, one of whichis arranged in each spending calculating-band forward to the extent ofone tooth The machine shown is adapted for the addition of numbers, andconsequently the carriers move the bands in a reversal of the parts thebands may be op the interior of the same-are depending leaf-.

disposed longitudinally of the machine and compartment and adapted tomove the corre- The carrying mechanism of the improved;

forward direction; but it is, obvious that by Lil - each carrier-plate.

erated in the opposite direction in order to do subtraction: Eachcarrier 6 is guided a't its rear portion by plates 6, \vhich'aredisposed above and below the same and extend through the severalpartitions longitudinally of the machine. At their forward portions theplates 6 are guided by a retractingbarf, which extends across the entiremachine and is slidable in forward-and-backward directionv anupwardly-directed spring tooth or pawl 2 maintained in engagement withthe corresponding band a by a small spring a as s .own in Fig. 2. Eachcarrier-plate is further provided at its front portion with a dependinglip e Applied to the rear end of each carrier-plate .is a helical springe by which the same is connected with the rear wall ofthe casing andnormally retained adjacent said rear wall.

Coacting with several carrier-plates e, by which each band is-advancedto the extent of one tooth, are a plurality of triggers t, one for Eachof said triggers is of the form shown inFig. 7that is to say, it isapproximately stirrup-shaped and. has a short upwardly-extending tooth tat one side and a longer horizontally-disposed leg or extension t at theother side, said extension being provided at its npper edge with ashoulder t, with which the depending lip e of the correspondingcarrier-plate coacts in order to retain said plate in forward positionafter it has been moved into such position by the re cipro catmgcross-bar f. ."Each trigger t is jeurnaled upon alongitudinally-extending shaft 'i and is normally maintained the ositionshown in Fi 2 b means of a small I i wound about said shaft or spindleTand pushing upwardly upon thev leg or exten sion. t of the stirrupslmped trigger.

.. As shown'in Fig. 6, each trigger t is mov able in two adjacentcompartments, its intermediate or transverse pcrtiont being guided in anopening 0 in each partition, so that the horizontal extension tdisposed. in one compartment in thepath of the lip e" of the carrier 9in said compartment, while the on posite end of the trigger thatis tosay, the upwardly-progectmg catch or tooth t-1s disposedin the adjacentcompartment in the path of the longer teeth 0 but not of the teeth 0.For the purpose. of guiding each trigger t and preventing itsdisplacement axially along the shaft T it is provided at the lower edgeof its intermediate portion t with a small recess a, which engagesthe-edge of thee-pening o in the corresponding partition.

. the sidewall of the machine.

The retracting-barf, which extends ire-Jasversely of all of the carriersa. erves the release of one or all of the carriers by the actuaiion ofthe trigger when the tooth t of the same is moved by the correspondingcalms laiing-band and said band has been, shifted forwardly to theextent of one tooth by the tooth e of the carrier to return one or allof said carriers to the position. shown in full lines in Fig. 2, inwhich the springs are set to tension and the mechanism is made ready foranother actuation. The return movement of each carrier is effected bythe forward movement of the retractingbar which abuts against the lip eof the carrierand moves the latter forwardly until-saidlip e11- gagesthe shoulder i of the corresponding trigger and is retained therebyowing to theaction of the'trigger-spring. in order to insure thereliable engagement of the lip 6 against the shoulder t the barf carriessaid. lip slightly beyond said shoulder, and after the release of saidbar the lip seats itself against said shoulder under the aclidn of thespring e The retracting-barf is provided at either end with an openingfand at one endthe right hand end, as .shownsaid opening is engaged bythe other end of an elbow-lever 71 fixed to a shaft 2., journaled in,the partitions and extending across the several compartments to theother side of the machine, Where 1t has fixed thereto a crank b, asshown n dotted lines 1}) Fig. 2 and in full lines in Fig. 4, which crankengages with its lower endinthe openingf at the opposite end of theretracting-bar The elbow-lever h is provided with a nose or beak if,under which. engages the rear end of a fulcrumed. actuatinglever Z, saidlever being fulcrumed to a pin 2), extendlng laterally from the lastpartition at the extreme right of the machine, as shown in Fig. 4. Thelever Z extends outwardly from the casing, at the front thereof, whereit operates in a suitable slot. By depressing said lever the elbowdever7i, and consequently the lever t, are rocked about their common axis andby their forwardly-moving lower ends shift the retractingbarin forwarddirection against the tension of a spring j',

which normallyholds said barat the eX- treme rearward end of itsguide-slots.

In order to insure a complete movementv of the retracting-lever Z, andconsequently of the b or the former is provided. with a paw1-andsratchet mechanism 1, as shown 'inli'igs. 3. and a, said mechanismembodying a pawl the movement of which is controlled in. opposite"directions by two oppositely-acting springs, as indicated, and whichengages the teeth of a rack securedto the inner face of By thismechanism it is impossible to release the lever Z after the engagementof the pawl until a completehmovement of the retracting-bar f has beeneiicted and. all of the carriers 9 are set in position to be operated,their springs being properly tensioned.

The mechanism for returning the several bands to their initial or zeroposition. after each calculation consists, essentially, of a bar m,extending transversely across all of the bands above the same andmovable forwardly and rearwardlyin the. casing. Said bar carries uponits under surface at points in register Withthe longer teeth 0 but notwith the shorter teeth c, a number of spring catches k, which areadapted to engage the end portions of the longer teeth and when said baris moved forwardly to carry the bands to their initial or zero position.In

the front portion of the casing a longitudi nally-arranged shaft to isjournaled in the partitions and carries at either end-in compartmentsbeyond the numeral-carrying band pulleys M, which cooperate with pulleysa arranged loosely on the shaft 1) at the rear of the machine guidewires or other similar members w, to which the zero-setting bar m isattached, as shown in Fig. 5. The normal position of the zero-settingbar m is shown in Figs. 1. and 2, in which it is hidden from view by therear portion of the cover of the machine, and it is maintained in thispo sition by means of a helical spring a, acting upon the forward shaftu. The zero-setting bar m is provided at one end with an upwardly-extending fin ger-piece m, movable transversely of the machine ina slot m on the substantially the manner heretofore deupon saidcarriers.

scribed. However, the carriers 2, with which they cooperate, are pivotedand spring actuated in the manner shown, being pro vided with terminalteeth 2 adapted to engage the teeth of the wheels y and when saidcarriers are released by the triggers z to ac, 'tuate said wheel to theextent of one tooth under the influence of the springs acting Therelease of the triggers or detents z is effected by pins 2 one of whichis arrangd upon the side of each a wheel y, and during eachrevolution"that is to say, when the band has been moved to the extent often numbers abuts against and releases said trigger. The carriers 2. arereturned to then mitial position by means of alever 2*, as indicated indotted lines in Fig.

9, said lever carrying a cross-strip 2 which engages all of the pivotedcarriers 2.

The operationof the improved machine is as follows; The several partsbeing in their ertures c normal position and the bands being set so thatthe character 0 appears in all the apertures a the number to be added isrecorded. by inserting the finger at the right of 'said numeral as itoccurs on the numeralcarrying strip a and in pulling the band toward thefront of the machine until said number a ppears in the aperture a Forthe purposes of description it is assumed that the number thus recordedis 'less than ten, and consequently that the band at the extreme rightis so actuated. It is obvious that when one number or several numbersgiving a total of less than ten are added that the result will appear onthe unit-band through the unit-aperture. However, when a number is addedwhich carries the result from units to tens one of the longertenth teeth0 will engage the upwardly-extending tooth 23 located in theunit-compartment,

and in so abutting against and rocking said tooth will release thecarrier e in the tepscompartment, whereupon said carrier, bein retractedby the action of its spring 6 wifi engage by its spring-actuated toothor pawl e one of the teeth 0 c and shift forwardly the band to theextent of one tooth, so that a 1 appears in the tens-aperture instead ofa 0. When the number or total changes from tens to hundreds, the sameoperation takes place, the trigger being released by'the band in thetens-compartment and setting in motion the carrier in the huno recs-compartment, so that the band in said last-named compartment isadvanced one figure. In

this manner the addition may continue until the numeral 9 appears ineach of the aplargest total which can be registered is f 999,999, asthere are six numeral-carrying bands. number of bands which may beemployed is theoretically unlimited In order to insure the propercarrying of the numbers from one column to theother, it

of every-number, so that each and all of the carriers are set and readyfor operation by their corresponding numeral carrying bands.

However, it is obvious that the.

In the machine illustrated the The lever Z thus servesfor settingiLll'Of the carriers, and after said lever has been so used the carryingoperation; .18 :fefi'ected automatically.

When the total of'the nurnbe'rs added has been ascertained by'observingthe apertures a and it is desired to set the machine at zero for anothercalculation, the finger-piece m" of the zero-setting'bar-m ispulledforwardly in its slot m3, so that said bar m is advanced and byitscatches lc, which engage the longer teeth of each band, carries forwardall of the bands until the character 0 appears in all of the apertures.By the provision of the pulleys u, a, and Wire the pressure upon thezero-setting bar on is equalized to a great extent, so that thefinger-piece m 4 moves smoothly in its slot and so that the bar maybeactuated witha min mum amount of pulling. By the provision of the springu acting upon said pulleys and said Wire the Zero-setting bar isretracted into its nonmal position (indicated in dotted lines in Fig. 1)immediately after its release.

In the modified construction shown in Figs. 9 and 10 the operation isessentially the-- same as that described, thepivoted carriers beingreleased by the trigger z whenthe lat-' ter is in turn engaged by thepin z -viz., once diu'ing the rotation of each Wheel y. In thisarrangement, however, the carriers instead of being slidable are pivotedand in stead of directly engaging the bands engage said bandtothe-extent of one tooth, and a stirrup-shaped trigger operable" tohold-each carrier in energized p'osition, but releasable by every tenthtooth of the adjacent band.

l 2. In a cal-culatingnia'c'hine, in combination, a casing divided.into' a plurality of par-- allel compartments, an endlessnun1eral-carrying band operating in each of said cornpartments, teethcarried bysaid band, one

for each number, every tenth toothbeing of greater length than the otherteeth, a spring actuated carrier in each com artment adapted to engageall the teeth ot the corresponding band and shift said band to theextent of" one tooth, and a tr1gger--coact1ng With-each carrier andextending into the adjacent cornpartment and into the path of the longerteeth of the adjacent band. 7

Thecombination, with a plurality of numeral-carrying elements, ofspring-actuated carriers for shifting said elements to the extent.of'one number, a trigger coacting with each carrier and releasable bythe adjacent element upon" a ,predetermined actuation thereof, and areciprocatingbar for retract ing all of said carriers. V

4; The combination, with a plurality of numeral-carrying elements, ofspring-actu ated carriers for shifting said elements *to the extent ofone number, a trigger coacting with each carrier and releasable by theadjacent element upon a predetermined actuation.

thereof, areciprocating bar .forretracting all see, 120

of'said carriers, and a lever mechanism for operating said bar.

5. The combination, with a plurality of endless numeral-carryingelements, of "a spring-actuated carrier for shifting each :ele

ment to the extent'of one-number a trigger coasting with each carrierand releasable by the adjacent element upon a predetermined actuationthereof, a reciprocating bar for re part operating in said compartments,a carrier in each compartment for shifting the corre spond" anda triggeroperating in an opening in each "ion and having one portion to set thecarrier in one compartment, and another part to engage and he releasedby the band in thence: t adjacent compartment.

In calculating-machine, the co1nb1na ftion, wi h aplurality of nuineralcarrying bands, of a carrier to shift each band to the extent of onenumber, a trigger for setting eachnasmicnand releasable by the adjacentband, shaft extendingtransversely of said bands,levers-carried by. saidshaft, a re tracting-bar, fer said carriers connectingthe ends of saidlevers, and means for rocking said shal'tf y l 9; A caleulatingnnachineincluding in its construction a plurality of numeral-carrying bands,teeth carried by said bands, vone for each'number, every tenth toothbeing of: greater length than. the other teeth, and a reciprocatingzero-setting bar having means'to engage the longer teeth of all of saidbands.

10. Acalculating-machine including in its construction apluralityoinumeral-cz-rrying bands, teeth carried by said bands, one foreach number, every tenth tooth. being of greater length than the otherteeth, a recip rocating zero-setting bar having means to engage thelonger teeth of all of said bands, and a spring for normally holdingsaid .bar in. in-- operative position.

11. A 'c'aleulating-machine including in its, construction a pluralityof inimeral carrying I bands, tecthcarricd bysaid bands, one for eachnumber, every tenth tooth being of greater length than the other teeth,arecip rovcatin'g zero-setting bar having means to engage the longerteeth of all. of said'bands, a spring for normally holding said barinopband'to the extent of one number,

erative position, pulleys journaled at the setting all of said bands atzero, carrying a front and rear of the machine and at eitherfinger-piece extending through said slotin the side thereof, and WiresWound about the corcasing.

responding front and rear pulleys and at- In testimony thatl claim theforegoing as 5 tached to said zero-setting bar.

my invention 1 have signed my name in pres- 15 12. The combination, witha casing havlng ence of two subscribing Witnesses. a transversel-disposed 'slot in the cover NATHAN J. GOLDFARB. thereof, at th side ofsaid cover, of a plu- Witnesses: rality of numeral-carrying bandsoperating PAUL GOEPEL, w in said casing, and a reciprocating bar, for IHENRY J. SUHRBIER.

